變了聲色 His Face Changed Colour
那道士聞此言，卻就惱恨，遂變了聲色道：「這和尚原來這等無禮，這等憊懶。你們都放心，等我擺佈他。」那道士闻此言，却就恼恨，遂变了声色道：「这和尚原来这等无礼，这等惫懒。你们都放心，等我摆布他。」
逐句解 Line by line
Hearing this, the Daoist was seized with anger and resentment, and his voice and face changed. "So the monk is as ill-mannered as that — as shameless as that."
變了聲色 is a set phrase: voice and colour altered together, the whole manner changing at once. English says somebody's face fell, or their tone hardened; Chinese fuses the two. He picks up 憊懶 straight out of his sisters' mouths, which is what people do when they are adopting a grievance. Note that 無禮, ill-mannered, occurs exactly once in this chapter — here — which given how much of the chapter is about manners is a small surprise.
"Set your minds at rest, all of you. Leave me to deal with him."
擺佈 literally means to arrange or lay out, and it has drifted the way English "to take care of someone" drifts — from putting things in order to disposing of a person. The chill is in the ordinariness. He is not vowing revenge; he is saying he will handle it.
The turn takes eleven characters. He was defending his hospitality eight passages ago; he is now planning a killing, and the thing that moved him was not the attempted murder of his sisters but the indignity of the bathing pool. 無禮 and 憊懶 are both words about conduct, not about harm. What offends him is that the monk behaved badly.
That he repeats his sisters' own word is the sharpest touch. 憊懶 was hers a moment ago; now it is his. Anyone who has watched a family member arrive at an argument late and adopt the vocabulary wholesale will recognise the moment exactly.
And 擺佈 is the word to carry forward. Set your minds at rest, leave me to arrange it. He does not say what he will arrange, and the women do not ask. Out in the courtyard, four men are still looking at the scenery.